Gas permeability tester and mechanical folding device were developed to study the barrier property and deformation failure behaviors . the surface characterization , chemical structure , optical , mechanical properties of pet coated with dlc have been investigated by x - ray photoelectron spectroscopy ( xps ) , contact angle measurement , light transmission analysis , nanoindentation and friction wear tests 通过x射线光电子谱分析、接触角测定、光学透过率分析、纳米压痕、摩擦磨损试验、机械弯折试验、气体透过率试验,对膜层的表面特征,光学、力学及气体阻隔性能进行了系统的研究。
Professor wei s another research area is mathematical theory of material science , with focus on the morphology of block copolymers . block copolymers are soft , synthetic materials developed to have exquisite mechanical , electrical , optical , ionic and barrier properties for industrial and commercial use 魏教授另一项研究是物料科学的数学理论，主要是大块共聚物（ blockcopolymer ）的形态学。大块共聚物是一种柔软的合成物质，拥有特殊的机械学、电学、光学，以及离子和屏障的性质，有广泛的工商业应用价值。
The content of pema affects on interplanar distance of pe / mmt composite . the content of pema increases as the interplanar distance , barrier properties and melting point of composites increased , when the critical content of pema ( wpema = 30 % ) could get exfoliated composites . the interlayer spacing of pe / mmt composites depends on content of mmt , but not the content of mmt increases as the interlayer spacing increases 同时用x射线衍射（ xrd ）衍射实验、红外光谱( ir )实验、差热分析试验（ dta ） 、力学性能测试等手段，研究了采用不同的相容剂改善聚乙烯与蒙脱土之间的相容性的情况；相容剂的用量对聚乙烯/蒙脱土复合材料层间距、性能的影响；蒙脱土的含量对pe / mmt对复合体系的层间距影响；以及工艺条件对复合体系的层间距和性能的影响。
They can attain excellent mechanical properties , thermal stability and barrier properties at lower clay content . their potential applications include film , food packing , and components in electrical parts , automobile and airplane . preparing the acr / mmt nanocomposites by emulsion polymerization , the structures of the intercalated nanocomposites are characterized by xrd and tga , tem 在粘土加入量很少时，就表现出优异的力学性能、耐候性、以及阻隔性等，因此这类材料在薄膜、食品包装及电子、电器和汽车的零部件方面具有广泛的应用前景。
Polymer / mmt nanocomposite is a new class of material . they can attain excellent mechanical properties , thermal stability and barrier properties at lower clay content . their potential applications include film , food packing , components in electrical parts , automobile and airplane 聚合物粘土纳米复合材料是目前新兴的一类复合材料，在粘土含量不高时，就能表现出优异的力学性能、耐热性、及阻隔性等，因此这类材料在薄膜、食品包装及电子、电器和汽车、飞机的零部件方面具有广阔的应用前景。
The status and prospect of the material and processing forplastic beer bottle at home and abroad are introduced . the new fruits as well as pacvd techniqne and nano - polymer to improve the barrier property are described . it will be a great foreground that the plastic beer bottle is domestically developed 介绍了国内外制造塑料啤酒瓶的材料及其加工工艺的现状和发展前景，提出了用pacvd (等离子辅助化学气相沉积)技术与纳米聚合物提高啤酒瓶阻隔性的新成果，指出在国内发展塑料啤酒瓶包装的伟大前景。
